EP1111319A2 - Dispositif frigorifique - Google Patents

Dispositif frigorifique Download PDF

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Publication number
EP1111319A2
EP1111319A2 EP00127673A EP00127673A EP1111319A2 EP 1111319 A2 EP1111319 A2 EP 1111319A2 EP 00127673 A EP00127673 A EP 00127673A EP 00127673 A EP00127673 A EP 00127673A EP 1111319 A2 EP1111319 A2 EP 1111319A2
Authority
EP
European Patent Office
Prior art keywords
structural unit
cold room
wall
compressor
speed controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00127673A
Other languages
German (de)
English (en)
Other versions
EP1111319B1 (fr
EP1111319A3 (fr
Inventor
Jan Caroe Aarestrup
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos AS
Original Assignee
Grundfos AS
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Filing date
Publication date
Application filed by Grundfos AS filed Critical Grundfos AS
Publication of EP1111319A2 publication Critical patent/EP1111319A2/fr
Publication of EP1111319A3 publication Critical patent/EP1111319A3/fr
Application granted granted Critical
Publication of EP1111319B1 publication Critical patent/EP1111319B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the invention relates to a cooling device in the form of a cabinet or Chest according to the features specified in the preamble of claim 1.
  • Such cooling devices are, for example, refrigerators, freezers, Fridge-freezer combinations, freezers and the like. It is about in this case about devices manufactured in large series, in which due to the Mass production even slight simplifications in manufacturing and assembly can lead to high cost savings. While such devices to date work almost exclusively under thermostat control, d. H. depending on the cold room temperature be switched on or off, there are already considerations, the compressor driving motor with an electronic speed controller and regulate. Such speed controllers, for example frequency converters, can are now miniaturized and manufactured at acceptable costs.
  • a Such a cooling device is known for example from PCT / DK96 / 00300. There the compressor is designed as a substantially closed pot, the Frequency converter inside a box attached to the side of this pot sits.
  • the object of the invention is a generic one Cooling device in which the drive motor of the compressor by a electronic speed controller is controlled so that the aforementioned Disadvantages are largely avoided.
  • a device be created, which is inexpensive to manufacture, reliable works and is also easy to repair.
  • the basic idea of the present invention is to put together the speed controller to be combined with the temperature or speed control to form a structural unit, in order to replace the compressor separately Create unit that can be replaced quickly and easily even in the event of repairs can be.
  • This at least from temperature control and speed controller The unit formed forms the central connection component of the cooling or Freezer, since the mains supply connects to this central unit.
  • the output of the speed controller is via a connecting cable to the compressor connected. Other cable connections are depending on the arrangement and The scope of the unit may be required.
  • the structural unit can also be arranged on the compressor, then expediently vibration-damped on the compressor housing is attached.
  • the speed controller and at least is preferred the electronic control comprising a structural unit spatially separated from the compressor be arranged separately.
  • the sensitive electronics are arranged there as a unit can be where it is in terms of vibration exposure and heat dissipation is cheap.
  • all of the electronics are preferably structural Unit summarized.
  • the speed controller and temperature control can therefore possibly further electrical or electronic components in this structural unit can be arranged.
  • the electronics from the compressor spatially separated or at least vibration isolated and / or is arranged thermally insulated there is a much more favorable long-term behavior, d. H.
  • compressor and electronics can be separated in the event of a repair be replaced. This is particularly important because when exchanging the compressor the coolant circuit is always open, which with mechanical Interventions in the system are connected, which are expensive. When exchanging Electronics, on the other hand, only requires the loosening of screw or snap connections as well as electrical contacts, which is also due to little trained Service technician can be done.
  • the Unit the number of components to be assembled can be further reduced if namely, what is appropriate, as many other components as possible, such as Lighting, temperature display, operating status display, temperature sensor and if necessary, further components can be integrated into this structural unit.
  • a sensor is also used in this structural unit Acquisition of a reference variable for cold room temperature control, namely for the Scheme is provided.
  • a sensor can be a temperature sensor his.
  • the sensor can be arranged within the device within the structural unit such that he protrudes through a recess in the wall in the refrigerator, while the remaining part of the structural unit is arranged outside.
  • the sensor is arranged on the outside of the wall and thermally conductive this be connected, so that an opening through the cold room wall is unnecessary is. This in turn has advantages with regard to the thermal insulation of the Cold room and the tightness requirements of the structural unit.
  • the structural unit sit inside the refrigerator or outside. If she sits outside, can they rest on the wall delimiting the cooling space or at a distance be arranged for this. The latter will be particularly favorable if the Heat loss of the power electronics, which is arranged within the structural unit is completely to the ambient air and not directly or indirectly should be dissipated via the cooling medium.
  • the unit can preferably in the air-side convection flow of the condenser, preferably be located below this, as the air is coldest there.
  • a dissipation of the heat loss via the cooling medium is provided it expedient to either the structural unit within the cold room or directly adjacent to the wall and or at least thermally connected to arrange with this. Constructions and are particularly advantageous Arrangements in which the control parts are part of the structural unit, the structural unit is arranged so that the controls for the consumer are accessible.
  • An electronic frequency converter is preferably used as the speed controller. In a simpler form, however, this can also be done by a phase control or even be formed by a pulse cascade circuit. With the latter the electronics essentially consist of the switch and the control, which controls the switch.
  • the door or cover switch contact for the cold room lighting in this structural unit and possibly also integrated the lighting itself.
  • it can in particular useful when arranging the structural unit within the cold room be a blower for circulating the air in the cold room into the to integrate the structural unit. With such air circulation, both Heat dissipation improves as well as a largely uniform temperature distribution be produced within the entire cold room.
  • a transmitting and / or receiving device for wireless data transmission the device is to be provided, it is expediently in the structural unit integrated.
  • the entire electronics of the Device summarized in the structural unit which is not just manufacturing Brings advantages.
  • Such wireless data transmission can for example for setting the cold room temperature from the outside or for integration serve the device in a computer controlled system.
  • the provision A remote control is particularly advantageous if the arrangement of the structural unit is such that direct access for setting purposes is not or only is possible with difficulty.
  • a defrost from time to time at least the evaporator is required is required.
  • the defrost control is then also integrated in the structural unit.
  • the cooling of the power electronics by the cooling medium itself or via the Air in the refrigerator is very effective and enables a high level Degree of miniaturization of power electronics, but on the other hand has the disadvantage that it degrades the overall efficiency of the device.
  • the invention therefore alternatively provides for the structural unit to be close to or on the outside to arrange the device and the heat loss of the power electronics remove the ambient air. Depending on the spatial conditions, it can also be useful, both convection cooling to the outside and cooling to be provided via the cooling medium or the cooling compartment.
  • the refrigerator shown in FIG. 1 has a cooling space 1 delimiting it Wall 2 on.
  • the front of the refrigerator 1 is through a door 3 completed.
  • the wall 2 is on the outside as in such devices Usually provided with insulation 4, which is shown in Fig. 1 only on the top is.
  • insulation 4 which is shown in Fig. 1 only on the top is.
  • the wall 2 springs back in steps at the front, to the outside underneath a space for one usually arranged there To create compressor 5.
  • the compressor 5 can either as closed compressor pot or be designed as an open system. He is via a line, not shown, with a rear inside the refrigerator 1 provided evaporator 6 connected. the one with an expansion device Connected with one on the back of the outside of the Wall 2 spaced capacitor 7 is connected, the Input in turn is connected to the compressor output.
  • the compressor 5 which is not described in detail here, has an electric motor on by means of an electronic speed controller in the form of a frequency converter is controlled.
  • the frequency converter in turn is replaced by a Temperature control controlled by a temperature sensor the cold room temperature supervised.
  • the electronics of the frequency converter and the control electronics are combined in a structural unit 8 and together with the remaining electronics of the device arranged in a common housing.
  • FIG. 1 Units 8a to 8i vary in detail depending on whether, for example, the Temperature sensor, the fan, the lamp, the switch, a display or others Have components or not.
  • each structural unit 8 is the Frequency converter and the control electronics assigned. However, it can also further electronics, for example for regulating the expansion device, the is usually provided on the compressor side, also in this structural unit 8 be integrated.
  • All arrangements of the structural unit 8 have in common that they are spatial separate from the compressor 5, so this is vibration isolated and are arranged thermally separated.
  • the structural unit 8a is in the area between wall 2 and the outside of the not shown in this area Insulation.
  • the variance of the arrangement with regard to the distance to the wall 2 can be as it is further below based on the arrangements 8d, 8e and 8f are explained.
  • the arrangement 8a above the compressor 5 or 8b or 8c near the rear wall has the advantage of short cable runs.
  • the structural unit 8d is arranged so that it is inside the insulation 4 on the Wall 2, namely at the top of the cooling chamber 1 wall part is present. Such an arrangement is particularly advantageous if the structural unit is only cooled via the cold room should. On the other hand, cooling via the cold room should not be possible take place, the arrangement of the structural unit 8e is preferred, which on the Insulation 4 is arranged.
  • the cooling space 1 lies through the insulation 4 protected under the structural unit 8e, the heat generated there rises and is dissipated there by suitable heat sinks.
  • the structural unit 8g is typically one from the front into the insulation 4 used. which also the refrigerator compartment lighting, the corresponding door contact switch as well as a temperature display visible from the front as well as has further indicator lights and switches.
  • the structural unit 8h is arranged and includes within the cold room 1 In addition to the lamp and door contact switch, the temperature adjuster for selecting the Cold room temperature.
  • the structural unit 8i arranged in the bottom of the refrigerator is arranged such that it is thermally connected to the sheet metal chassis. About the sheet metal embossed base plate, all heat is dissipated.
  • the structural unit 8f can be at a distance from the Wall 2 can be arranged and still be cooled via the cold room.
  • the structural unit 8f has a heat conduction device near its underside 9 (heat spreader), which rests on the wall 2 and is thermally conductive connected to it.
  • the resulting within the structural unit 8f Heat is therefore at least partially on the heat conduction device 9 Wall 2 and thus transferred to the air in the refrigerator 1, which is cooled by the evaporator 6.
  • a cone-like formation 10 which is close the lower end carries a temperature sensor, which is also thermally conductive the wall 2 is connected.
  • This temperature sensor is used to record the Cold room temperature and is the control located in the structural unit 8f assigned.
  • the distance between the pin-like formation 10 and the Heat-conducting device 9 is selected so that the influence due to the the heat conduction device 9 to the wall 2 and thus the one in the cooling space 1 the heat emitted is as low as possible.
  • the structural unit 8f can optionally be additionally cooled by convection on its upper side.
  • Such Arrangement has the advantage that it is due to the insulation to the wall 2 is largely protected against condensation and that the wall 2 in this area can remain closed, so that no further cold bridges to the cold room 1 and leaks of the cold room 1 arise.
  • FIG. 3 shows an embodiment variant of the structural unit 8f, which is marked with 8f '.
  • the arrangement essentially corresponds the above, d. H. at a distance from the wall 2 by insulation 4 separated.
  • the heat is not in the cold room, but only in the ambient air dissipated.
  • this heat sink 11 also or additionally Can include sides of the structural unit.
  • To guarantee Kömien is a cone-like training in the structural unit 8f ' 10 'is provided, which passes through the insulation 4 and the wall 2.
  • the structural unit 8 can also be arranged directly against the wall 2 be when there is almost exclusively heat dissipation via the refrigerator 1 is desired.
  • the structural unit designated 8h in FIG. 1 lies within the cooling space 1.
  • the construction of such a structural unit 8h is exemplified with reference to FIG. 4 shown.
  • the structural unit 8h has a switch contact on its front side 12, which is controlled by the door 3 and for switching the Cold room lighting is used. This lighting is in the form of a lamp 13 in the structural unit 8h integrated.
  • An air duct 14 is around the lamp 13 formed, in which a fan 15 sits, both also part of the structural unit 8h.
  • the power electronics are targeted by means of the fan 15 and the air duct 14 chilled. In addition, an intensive air circulation in the Cold room guaranteed.
  • a setting wheel 18 is accessible from the outside and serves to preselect the cold room temperature.
  • a temperature sensor 19 is within the air duct 14 near the one end arranged so that even when the fan is not operating a proportionate accurate temperature detection of the cold room 1 is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP00127673A 1999-12-23 2000-12-18 Dispositif frigorifique Expired - Lifetime EP1111319B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19962728 1999-12-23
DE19962728A DE19962728A1 (de) 1999-12-23 1999-12-23 Kühlvorrichtung

Publications (3)

Publication Number Publication Date
EP1111319A2 true EP1111319A2 (fr) 2001-06-27
EP1111319A3 EP1111319A3 (fr) 2002-01-09
EP1111319B1 EP1111319B1 (fr) 2006-04-12

Family

ID=7934308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127673A Expired - Lifetime EP1111319B1 (fr) 1999-12-23 2000-12-18 Dispositif frigorifique

Country Status (3)

Country Link
US (1) US6675590B2 (fr)
EP (1) EP1111319B1 (fr)
DE (2) DE19962728A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006087519A1 (fr) 2005-02-18 2006-08-24 Core Control International Limited Emballage reutilisable pour rouleau de matiere
WO2012022610A3 (fr) * 2010-08-18 2012-11-15 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique doté d'un capteur de température
CN112285452A (zh) * 2020-09-10 2021-01-29 河北工业大学 一种测量电学参数低温特性的装置和方法

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135294B4 (de) * 2001-07-19 2011-07-07 Sartorius Stedim Biotech GmbH, 37079 Prüfvorrichtung für Filtersysteme
DE20205224U1 (de) * 2002-01-31 2003-06-12 Liebherr Hausgeraete Kühl- und/oder Gefriergerät
KR100457567B1 (ko) * 2002-09-13 2004-11-18 엘지전자 주식회사 냉기를 이용한 히트 싱크가 장착된 인터넷 냉장고.
JP2004354017A (ja) * 2003-05-30 2004-12-16 Sanyo Electric Co Ltd 冷却装置
DE102004002131B4 (de) * 2004-01-15 2006-04-13 Danfoss Compressors Gmbh Kühlaggregat und Kühlmöbel
DE102004056450B4 (de) * 2004-11-23 2007-03-15 Danfoss Compressors Gmbh Kühlmöbelanordnung mit mindestens zwei elektrischen Motoren als Kompressorantriebe
US8181472B2 (en) * 2005-03-17 2012-05-22 Electrolux Home Products, Inc. Electronic refrigeration control system
US7716937B2 (en) * 2005-03-17 2010-05-18 Electrolux Home Products, Inc. Electronic refrigeration control system including a variable speed compressor
US20080041081A1 (en) * 2006-08-15 2008-02-21 Bristol Compressors, Inc. System and method for compressor capacity modulation in a heat pump
US7628028B2 (en) * 2005-08-03 2009-12-08 Bristol Compressors International, Inc. System and method for compressor capacity modulation
US8604709B2 (en) 2007-07-31 2013-12-10 Lsi Industries, Inc. Methods and systems for controlling electrical power to DC loads
US8903577B2 (en) * 2009-10-30 2014-12-02 Lsi Industries, Inc. Traction system for electrically powered vehicles
US7598683B1 (en) * 2007-07-31 2009-10-06 Lsi Industries, Inc. Control of light intensity using pulses of a fixed duration and frequency
US8790089B2 (en) * 2008-06-29 2014-07-29 Bristol Compressors International, Inc. Compressor speed control system for bearing reliability
DE202008009169U1 (de) * 2008-07-08 2009-11-19 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
US8601828B2 (en) 2009-04-29 2013-12-10 Bristol Compressors International, Inc. Capacity control systems and methods for a compressor
US8011191B2 (en) 2009-09-30 2011-09-06 Thermo Fisher Scientific (Asheville) Llc Refrigeration system having a variable speed compressor

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JPH02157554A (ja) * 1988-12-12 1990-06-18 Toshiba Corp 空気調和機
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DE9103447U1 (fr) * 1991-03-20 1991-06-13 Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De
US5231848A (en) 1991-09-05 1993-08-03 Tecumseh Products Company Refrigerator cold control
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EP0661453B1 (fr) * 1993-12-28 2003-04-23 Sanyo Electric Co. Ltd Circuit inverseur d'entraínement pour appareil de conditionnement de l'air
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006087519A1 (fr) 2005-02-18 2006-08-24 Core Control International Limited Emballage reutilisable pour rouleau de matiere
WO2012022610A3 (fr) * 2010-08-18 2012-11-15 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique doté d'un capteur de température
CN112285452A (zh) * 2020-09-10 2021-01-29 河北工业大学 一种测量电学参数低温特性的装置和方法

Also Published As

Publication number Publication date
EP1111319B1 (fr) 2006-04-12
EP1111319A3 (fr) 2002-01-09
DE50012567D1 (de) 2006-05-24
US20010037655A1 (en) 2001-11-08
DE19962728A1 (de) 2001-06-28
US6675590B2 (en) 2004-01-13

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